1212103012020 has 48 divisors (see below), whose sum is σ = 3472816079040. Its totient is φ = 315710551296.

The previous prime is 1212103011961. The next prime is 1212103012037. The reversal of 1212103012020 is 202103012121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234901105 + ... + 234906264.

It is an arithmetic number, because the mean of its divisors is an integer number (72350334980).

Almost surely, 2^{1212103012020} is an apocalyptic number.

1212103012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212103012020 is an abundant number, since it is smaller than the sum of its proper divisors (2260713067020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212103012020 is a wasteful number, since it uses less digits than its factorization.

1212103012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469807424 (or 469807422 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1212103012020 its reverse (202103012121), we get a palindrome (1414206024141).

The spelling of 1212103012020 in words is "one trillion, two hundred twelve billion, one hundred three million, twelve thousand, twenty".